<template>
  <div style="border: 1px solid #ccc">
    <Toolbar
        style="border-bottom: 1px solid #ccc"
        :editor="editorRef"
        :defaultConfig="toolbarConfig"
        :mode="mode"
    />
    <Editor
        style="min-height: 250px; overflow-y: hidden;"
        v-model="valueHtml"
        :defaultConfig="editorConfig"
        :mode="mode"
        @onCreated="handleCreated"
    />
  </div>
</template>

<script>
import '@wangeditor/editor/dist/css/style.css' // 引入 css
import { Editor, Toolbar } from '@wangeditor/editor-for-vue'

import {onBeforeUnmount, ref, shallowRef, watch, defineExpose} from 'vue'

import axios from "axios";

export default {
  components: { Editor, Toolbar },
  setup(props,{emit}) {
    emits: ['select']
    // 编辑器实例，必须用 shallowRef
    const editorRef = shallowRef()

    // 内容 HTML
    const valueHtml = ref('')

    //配置功能栏
    let toolbarConfig = {
      toolbarKeys: [
        'headerSelect',
        'blockquote',
        '|',
        'bold',
        'underline',
        'italic',
        {
          key: 'group-more-style',
          title: '更多',
          iconSvg:
              '<svg viewBox="0 0 1024 1024"><path d="M204.8 505.6m-76.8 0a76.8 76.8 0 1 0 153.6 0 76.8 76.8 0 1 0-153.6 0Z"></path><path d="M505.6 505.6m-76.8 0a76.8 76.8 0 1 0 153.6 0 76.8 76.8 0 1 0-153.6 0Z"></path><path d="M806.4 505.6m-76.8 0a76.8 76.8 0 1 0 153.6 0 76.8 76.8 0 1 0-153.6 0Z"></path></svg>',
          menuKeys: ['through', 'code', 'sup', 'sub']
        },
        'color',
        'bgColor',
        '|',
        'fontSize',
        {
          key: 'group-justify',
          title: '对齐',
          iconSvg:
              '<svg viewBox="0 0 1024 1024"><path d="M768 793.6v102.4H51.2v-102.4h716.8z m204.8-230.4v102.4H51.2v-102.4h921.6z m-204.8-230.4v102.4H51.2v-102.4h716.8zM972.8 102.4v102.4H51.2V102.4h921.6z"></path></svg>',
          menuKeys: ['justifyLeft', 'justifyRight', 'justifyCenter', 'justifyJustify']
        },
        'todo',
        'fontFamily',
        {
          key: 'group-indent',
          title: '缩进',
          iconSvg:
              '<svg viewBox="0 0 1024 1024"><path d="M0 64h1024v128H0z m384 192h640v128H384z m0 192h640v128H384z m0 192h640v128H384zM0 832h1024v128H0z m0-128V320l256 192z"></path></svg>',
          menuKeys: ['indent', 'delIndent']
        },
        '|',
        'emotion',
        'insertLink',
        'uploadImage',
        'insertTable',
        'codeBlock',
        'divider',
        'clearStyle',
        '|',
        'undo',
        'redo',
      ]
    }


    const uploadImageList = ref([])
    const saveImageList = ref([])

    //上传本地图片
    function update(file,insertFn) {
      let formData = new FormData()
      formData.append('file', file)
      axios.post('http://121.37.0.16:8080/api/file/upload',formData,{
        headers: {
          'Content-Type': 'multipart/form-data'
        }
      }).then(res => {
        if (res.data.code == 0){
          const src = 'http://121.37.0.16:9000/public/'+ res.data.data.fileName[0]
          insertFn(src, '百度 logo', src)
        }
      })
    }

    function getOnInsertedImage(imageNode){
      uploadImageList.value.push(imageNode)
    }

    //编辑器配置
    let editorConfig =  {
      placeholder: '请输入内容...',
          // 所有的菜单配置，都要在 MENU_CONF 属性下
          MENU_CONF: {
        insertImage:{
          onInsertedImage: getOnInsertedImage()
        },
        // 配置上传图片
        uploadImage: {
          customUpload: update
        }
      }
    }


    // 组件销毁时，也及时销毁编辑器
    onBeforeUnmount(() => {
      const editor = editorRef.value
      if (editor == null) return
      editor.destroy()
    })

    function copyObject(obj){
      return JSON.parse(JSON.stringify(obj));
    }
    const handleCreated = (editor) => {
      editorRef.value = editor // 记录 editor 实例，重要！
      saveImageList.value = editor.getElemsByType('image')
      uploadImageList.value = copyObject(saveImageList.value)
      // console.log('created', editor)
    }

    watch(() => valueHtml.value,()=>{
      //当编辑器的内容发生变化时，把值传给父组件
        emit('select', valueHtml.value)
    })


    const handleChange = (editor) => { console.log('change:', editor.children) }
    const handleDestroyed = (editor) => { console.log('destroyed', editor) }
    const handleFocus = (editor) => { console.log('focus', editor) }
    const handleBlur = (editor) => { console.log('blur', editor) }
    const customAlert = (info, type) => { alert(`【自定义提示】${type} - ${info}`) }
    const customPaste = (editor, event, callback) => {
      console.log('ClipboardEvent 粘贴事件对象', event)
      // const html = event.clipboardData.getData('text/html') // 获取粘贴的 html
      // const text = event.clipboardData.getData('text/plain') // 获取粘贴的纯文本
      // const rtf = event.clipboardData.getData('text/rtf') // 获取 rtf 数据（如从 word wsp 复制粘贴）

      // 自定义插入内容
      editor.insertText('xxx')

      // 返回 false ，阻止默认粘贴行为
      event.preventDefault()
      callback(false) // 返回值（注意，vue 事件的返回值，不能用 return）

      // 返回 true ，继续默认的粘贴行为
      // callback(true)
    }

    //父组件调用子组件的方法清空编辑器内容
    const abc =function (){
      valueHtml.value = ''
    }
    //暴露该方法,defineExpose要引入
    defineExpose({
      abc
    })

    return {
      editorRef,
      valueHtml,
      mode: 'default', // 或 'simple'
      toolbarConfig,
      editorConfig,
      handleCreated,
      handleChange,
      handleDestroyed,
      handleFocus,
      handleBlur,
      customAlert,
      customPaste,
      abc,
    };
  }
}

</script>

<style>
</style>